Abstract
The present study explores the antilisterial activities of potentially probiotic strain Pediococcus pentosaceus DS1 isolated from fermented bamboo shoot. 16s rRNA gene sequence analysis confirmed the identity of the strains. Class IIA bacteriocin pediocin expressing YGNGV motif was identified and its antilisterial activity was validated by well diffusion assay. When cocultured with P. pentosaceus DS1, in case of L. monocytogenes AMDK2, maximum biofilm exclusion (55.54 ± 3.44%) was observed which could be visually observed by Scanning electron micrographs. P. pentosaceus DS1 showed maximum adhesion inhibition to Caco-2 cell line in case of L. monocytogenes AMDK2 (91.8%) whereas maximum decrease in invasion was observed in case of L. monocytogenes MTCC 839 (52.9%). Coculture in UHT milk also significantly decreased microbial growth parameters of Listeria suggesting the efficiency of P. pentosaceus DS1 in the removal of Listeria contamination from food.
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